本文对兰州柴油机厂生产的195柴油机配气凸轮廓线的优化设计进行了研究,拟以经过优化的高次方多项式函数凸轮廓线代替原来的双圆弧廓线。在优化中以凸轮廓线的时面值为目标函数,高次方幂指数为设计变量,以限制加速度大小为约束条件。经过优化后的凸轮廓线的加速度曲线为连续曲线,时面值略有增大(增大1％)。虽然正加速度值也有所增大,但惯性力作用在凸轮轴上,影响不大。负加速度最大值有所降低,使弹簧工作平稳可靠。 In this paper, the optimal design of the flange profile of the 195 diesel engine produced by Lanzhou Diesel Engine Factory is studied. The optimized double arc contour is to be replaced by the optimized high-order polynomial function cam profile. In the optimization, the face value of the cam profile is taken as the objective function, the high power exponent is the design variable, and the restriction of the acceleration is the constraint. After optimization, the acceleration profile of the cam profile is a continuous curve with a slight increase in surface value (1% increase). Although the positive acceleration value has also increased, but the inertia force acting on the camshaft, little effect. Negative acceleration decreases the maximum, so that the spring work is stable and reliable.